ex1_f08sol - STA 6166 Fall 2008 Exam 1 PRINT Name _ True or...

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STA 6166 – Fall 2008 – Exam 1 PRINT Name __________ True or False In conducting a hypothesis test regarding a mean, the larger the P-value, the stronger the evidence against the null hypothesis. False We generally use histograms to display results corresponding to quantitative (as opposed to qualitative) variables. True If breaking strengths of wood boards are normally distributed with a mean of 150, and standard deviation 20; then 95% of such boards have breaking strengths between 130 and 170. False A sample that is conducted by taking a random number between 1 and 100, then taking that item and every 100 th item after that on a listing of a population is a systematic sample. True The (large-sample) sampling distribution for the sample mean is normally distributed only if the underlying population of measurements is normal. False All else being equal, as we increase the sample size, we increase the width of a Confidence Interval for μ False Problems Among male birds of a species, 20% have a particular gene. Among females of the species, 10% have the gene. The males comprise 40% of all the birds of the
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ex1_f08sol - STA 6166 Fall 2008 Exam 1 PRINT Name _ True or...

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